Food and Drug Administration scientists said the trace amounts of bisphenol A that leach out of food containers are not a threat to infants or adults. The agency acknowledged that more research is needed to fully understand the chemical's effects on humans, and noted "there are always uncertainties associated with safety decisions."

With the chemical banned in Canada, a pro-BPA PR campaign going full bore in the US—and BPA showing up in an estimated 93% of Americans' urine—we think we'll keep playing it safe.